Is there a link between insomnia and kleptomania?

None I know of: To my knowledge, there is no link at all between problems sleeping and a compulsion to steal things. The former is much more common than the latter, and possibly someone with kleptomania will have trouble sleeping because of guilt or fear of being caught. But insomnia definitely is not a cause of kelptmania.

Kleptomania: I was unable to find any articles or studies that linked Kleptomania with sleep disorder. Of course, if a person with Kleptomania had a co-existing mood or anxiety disorder - that could impact sleep.